Yes, if by "720 degrees of crankshaft rotation" you mean "two rotations"
Here is a great animation of a four-stroke at work:
http://www.animatedengines.com/otto.shtml
The four-stroke engine produces 1 power stroke for every 720 degrees of crankshaft rotation.
720 degrees
720 degrees
16
180 degrees per stroke.
90 degrees would be a half stroke.
90
The length of time or number of degrees of crankshaft rotation between the beginning of injection and ignition of the fuel.
A distributor less system with waste spark.
12 degrees is an angular measurement. BTDC means Before Top Dead Centre 12 degrees BTDC therefore means an angular measurement of 12 degrees against the working rotation of the crankshaft
1 rotation = 360 degrees 3/4 rotation = 270 degrees
A full rotation is a 360 degree rotation. A full circle is 360 degrees.